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Chapter 3 Fresh Water Resources

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Chapter 3 Fresh Water Resources Section 1: Water to Drink Ch. 3 Water to Drink, Section 1 Learning Objectives: Water to Drink Describe sources of drinking water and ... – PowerPoint PPT presentation

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Title: Chapter 3 Fresh Water Resources


1
Chapter 3 Fresh Water Resources
  • Section 1 Water to Drink

2
  • Ch. 3 Water to Drink, Section 1 Learning
    Objectives Water to Drink
  • Describe sources of drinking water and how it is
    treated and distributed.
  • Explain what happens to waste water

3
  • 1. Water quality The degree of purity of water,
    determined by measuring the substances in water,
    besides water molecules.

4
  • 2. pH How acidic or basic a substance is,
    measured on a scale of 1 (very acidic) to 14
    (very basic).

5
  • 3. Hardness The level of the minerals calcium
    and magnesium in water.

6
  • 4. Concentration The amount of one substance in
    a certain volume of another substance.

7
Water Treatment Process
  • View before going over definitions
  • http//www.youtube.com/watch?v9z14l51ISwg

8
  • 5. Filtration The process of passing water
    through a series of screens that allow the water
    through, but not larger solid particles.

9
  • 6. Flocs Sticky globs created by adding a
    chemical such as alum during water treatment.

10
  • 7. Coagulation The process by which particles in
    a liquid clump together a step in the water
    treatment process.

11
Pharmaceuticals in Drinking Water
  • http//www.youtube.com/watch?vc8M6MRqirKkfeature
    related
  • Fish Pharm
  • http//www.youtube.com/watch?v_PWnnlVj77Y

12
  • 8. Sewage Water containing human wastes.

13
Sewage Treatment Process
  • http//www.youtube.com/watch?vgxgpK1EUZnsfeature
    related

14
  • 9. Sludge Deposits of fine solids that settle
    out from wastewater during the treatment process.

15
  • 10. Septic tank An underground tank containing
    bacteria that treat wastewater as it passes
    through.

16
  • 11. Leach field The ground area around a septic
    tank through which wastewater filters after
    leaving the tank.

17
Notes
  • 1. Our drinking water either comes from a
    ________________ or _____________ water supply.

surface
underground
18
  • 2. Four sources of drinking water
  • a.
  • b.
  • c.
  • d.

lakes
rivers
reservoirs
aquifer
19
acidity
  • 3. _________________________,
  • _________________________, and
  • _______________________are three
  • factors that affect water quality.

hardness
Disease-causing organisms
20
6
  • 4. On the pH scale ______ to ______ would be
    acidic, ______is neutral, and _____ to _____ is
    basic.

0
7
14
8
21
  • 5. pH stands for
  • _________________________.
  • pH level refers to the amount of acid and
    alkaline contained inside of both the water and
    the growing medium or soil.  If the environment
    is too acidic, the plant will not attract enough
    hydrogen, while an environment that is too
    alkaline will attract too much hydrogen.  
  • An environment that continually fluctuates from
    one extreme on the pH scale to the other is
    unhealthy for the plant.

potential Hydrogen
22
hard
  • 6. __________ water contains high levels of
    _______________ and ______________.

calcium
magnesium
23
  • 7. ____________________ is added to drinking
    water to
  • __________________________.

chlorine
Kill disease causing micro-organisms
24
Chapter 3 Fresh Water
  • Section 2 Balancing Water Needs

25
  • Drought A water shortage caused by scarce
    rainfall in a particular area.

26
  • 13. Conservation The process of using a resource
    wisely so it will not be used up.

27
  • 14. Desalination The process of obtaining fresh
    water from salt water by removing the salt.

28
  • 1. A water shortage occurs when there
  • is _______________water, or too great
  • a _______________, or both.

too little
demand
29
  • 2. Three major forms of water conservation by
    industries
  • A.
  • B.
  • C.

Reduce water
Recycle water
Reuse water
30
  • 3. Two possible future sources of fresh
  • water are___________________ and
  • _________________.
  • Environmental questions with the ice berg
  • How would a huge mass of ice offshore affect the
    local weather?
  • What would happen to the living things as the ice
    cooled around it?

Salt water (desalination)
icebergs
31
  • 4. Five ways you can conserve water at home
  • A.
  • B.
  • C.
  • D.
  • E.

Take shorter showers
Scrub vegetables in a basin of water, not under
running water
Keep a pitcher of drinking water in the
refrigerator instead of running the water till it
gets cold
Turn off the faucet instead of letting it run
Only run the washing machine when you have a full
load
32
Chapter 3 Fresh Water
  • Section 3 Freshwater Pollution

Water The basics of use, pollution, and our
health in 5 minutes. http//www.youtube.com/watch?
vXMmpg35Bym0
33
  • 15. Water pollution The addition of any
    substance that has a negative effect on water or
    the living things that depend on the water.

34
  • 16. Point source A specific source of pollution
    that can be identified, such as a pipe.

35
  • 17. Nonpoint source A widely spread source of
    pollution that is difficult to link to a specific
    point of origin, such as road runoff.

36
  • 18. Acid rain Rain that is more acidic than
    normal, caused by the release of molecules of
    sulfur dioxide and nitrogen oxide into the air.

37
  • 19. Pesticide A chemical intended to kill
    insects and other organisms that damage crops.

38
  • 1. Four major sources of water pollution are
  • A.
  • B.
  • C.
  • D.

Human wastes
Industrial wastes
Agricultural chemicals
Runoff from roads
39
Cholera
  • 2. _______________________ is
  • caused by ________________waste.

bacteria in human
40
  • 3. Three types of industrial pollutants
  • A.
  • B.
  • C.

Chemicals
Smoke and exhaust
Heat pollution
41
  • 4. __________________rain is caused
  • by the _________________and
  • ____________released by smokestacks
  • and ___________exhaust.

Acid
Sulfur dioxide
Nitrogen oxide
car, truck, bus
42
  • 5. The rich supply of nutrients from
    _____________________encourages the growth of
    ________________and algae in nearby bodies of
    water.

fertilizers
plants
43
  • What can you do?
  • See Dr. Eddie Widder is doing-Making Water
    Pollution Visible
  • http//www.youtube.com/watch?vkzjssMaQr6A

44
Chapter 3 Fresh Water
  • Section 4 Water as an Energy Resource

45
  • 20. Kinetic energy The form of energy that an
    object has when it is moving.

46
  • 21. Potential energy Energy that is stored and
    waiting to be used.

47
  • 22. Hydroelectric power Electricity produced by
    the kinetic energy of water moving over a
    waterfall or dam.

48
  • 1. Four types of Energy in a Hydroelectric Power
    Plant
  • A.
  • B.
  • C.
  • D.
  • Hydroelectric power http//www.youtube.com/watch?
    vrnPEtwQtmGQ
  • Pg. 107 in text

Kinetic energy-form of energy an object has when
it is moving
Potential energy-energy stored and waiting to be
used
Hydroelectric power-electricity produced by the
kinetic energy of water moving over a waterfall
or a dam.
Electrical energy
49
  • 2. Three negative impacts a dam can have on an
    area
  • A.
  • B.
  • C.

Flooding the land can destroy wildlife habitats
as well as farms and towns
organisms can not survive the change of once fast
moving waters becoming still
The dam is a barrier across the river and it may
prevent fish from traveling to the parts of a
river where they usually lay their eggs and young
fish are hatched.
50
  • Three positive impacts a dam can have on an area
  • A.
  • B.
  • C.

Water power is the least expensive
Water is the least polluting large scale energy
source
Dams can supply water for irrigation and help in
flood control
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